The Southern Oxidants Study (SOS) conducted a major field research campaign in Nashville/Middle Tennessee area in June and July 1994 and 1995. The goal of this study was to improve scientific understanding of the processes that control the production and distribution of ozone in the troposphere.

In support of the 1995 Southern Oxidants Study (SOS) ... Nashville/Middle Tennessee Ozone Study, continuous 30-minute average eddy correlation flux measurements were collected for ozone, sulfur dioxide, and carbon dioxide at a south central Kentucky site (36.83 N, 87.03 W) near Keysburg, KY from June 22 through August 10, 1995. All measurements were made primarily above soybeans. Nitric acid gradients were measured for selected 2-hour periods between 1 and 8.5 meters and subsequently converted to fluxes. Heat flux, water flux, soil flux, soil storage, and net radiation were measured to characterize the energy budget. Additionally, 30-minute average values of ozone and sulfur dioxide concentrations, wind speed, wind direction, solar radiation, precipitation, surface wetness, relative humidity, temperature gradient, etc. were made to support evaluation of the inferential dry deposition model. Leaf area index, stomatal resistance, and vegetation height were also measured.

The NOAA Atmospheric Sciences Modeling Division (ASMD), a division of NOAA's Air Resources Laboratory, is primarily responsible for the pollution meteorology research for the U.S. Environmental Protection Agency (EPA).